web-html5-scripts/buttons-and-toggles/power-switch-animation/style.css

.power-switch {
  --color-invert: #ffffff;
  --width: 150px;
  --height: 150px;
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  width: var(--width);
  height: var(--height);
}
.power-switch .button {
  width: 100%;
  height: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}
.power-switch .button:after {
  content: "";
  width: 100%;
  height: 100%;
  position: absolute;
  background: radial-gradient(circle closest-side, var(--color-invert), transparent);
  -webkit-filter: blur(20px);
          filter: blur(20px);
  opacity: 0;
  transition: opacity 1s ease, -webkit-transform 1s ease;
  transition: opacity 1s ease, transform 1s ease;
  transition: opacity 1s ease, transform 1s ease, -webkit-transform 1s ease;
  -webkit-transform: perspective(1px) translateZ(0);
          transform: perspective(1px) translateZ(0);
  -webkit-backface-visibility: hidden;
          backface-visibility: hidden;
}
.power-switch .button .power-on,
.power-switch .button .power-off {
  height: 100%;
  width: 100%;
  position: absolute;
  z-index: 1;
  fill: none;
  stroke: var(--color-invert);
  stroke-width: 8px;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.power-switch .button .power-on .line,
.power-switch .button .power-off .line {
  opacity: .2;
}
.power-switch .button .power-on .circle,
.power-switch .button .power-off .circle {
  opacity: .2;
  -webkit-transform: rotate(-58deg);
          transform: rotate(-58deg);
  -webkit-transform-origin: center 80px;
          transform-origin: center 80px;
  stroke-dasharray: 220;
  stroke-dashoffset: 40;
}
.power-switch .button .power-on {
  -webkit-filter: drop-shadow(0px 0px 6px rgba(255, 255, 255, 0.8));
          filter: drop-shadow(0px 0px 6px rgba(255, 255, 255, 0.8));
}
.power-switch .button .power-on .line {
  opacity: 0;
  transition: opacity .3s ease 1s;
}
.power-switch .button .power-on .circle {
  opacity: 1;
  stroke-dashoffset: 220;
  transition: stroke-dashoffset 1s ease 0s, -webkit-transform 0s ease;
  transition: transform 0s ease, stroke-dashoffset 1s ease 0s;
  transition: transform 0s ease, stroke-dashoffset 1s ease 0s, -webkit-transform 0s ease;
}
.power-switch input {
  position: absolute;
  height: 100%;
  width: 100%;
  z-index: 2;
  cursor: pointer;
  opacity: 0;
}
.power-switch input:checked + .button:after {
  opacity: 0.15;
  -webkit-transform: scale(2) perspective(1px) translateZ(0);
          transform: scale(2) perspective(1px) translateZ(0);
  -webkit-backface-visibility: hidden;
          backface-visibility: hidden;
  transition: opacity .5s ease, -webkit-transform .5s ease;
  transition: opacity .5s ease, transform .5s ease;
  transition: opacity .5s ease, transform .5s ease, -webkit-transform .5s ease;
}
.power-switch input:checked + .button .power-on,
.power-switch input:checked + .button .power-off {
  -webkit-animation: click-animation .3s ease forwards;
          animation: click-animation .3s ease forwards;
  -webkit-transform: scale(1);
          transform: scale(1);
}
.power-switch input:checked + .button .power-on .line,
.power-switch input:checked + .button .power-off .line {
  -webkit-animation: line-animation .8s ease-in forwards;
          animation: line-animation .8s ease-in forwards;
}
.power-switch input:checked + .button .power-on .circle,
.power-switch input:checked + .button .power-off .circle {
  -webkit-transform: rotate(302deg);
          transform: rotate(302deg);
}
.power-switch input:checked + .button .power-on .line {
  opacity: 1;
  transition: opacity .05s ease-in .55s;
}
.power-switch input:checked + .button .power-on .circle {
  -webkit-transform: rotate(302deg);
          transform: rotate(302deg);
  stroke-dashoffset: 40;
  transition: stroke-dashoffset .4s ease .2s, -webkit-transform .4s ease .2s;
  transition: transform .4s ease .2s, stroke-dashoffset .4s ease .2s;
  transition: transform .4s ease .2s, stroke-dashoffset .4s ease .2s, -webkit-transform .4s ease .2s;
}

@-webkit-keyframes line-animation {
  0% {
    -webkit-transform: translateY(0);
            transform: translateY(0);
  }
  10% {
    -webkit-transform: translateY(10px);
            transform: translateY(10px);
  }
  40% {
    -webkit-transform: translateY(-25px);
            transform: translateY(-25px);
  }
  60% {
    -webkit-transform: translateY(-25px);
            transform: translateY(-25px);
  }
  85% {
    -webkit-transform: translateY(10px);
            transform: translateY(10px);
  }
  100% {
    -webkit-transform: translateY(0px);
            transform: translateY(0px);
  }
}

@keyframes line-animation {
  0% {
    -webkit-transform: translateY(0);
            transform: translateY(0);
  }
  10% {
    -webkit-transform: translateY(10px);
            transform: translateY(10px);
  }
  40% {
    -webkit-transform: translateY(-25px);
            transform: translateY(-25px);
  }
  60% {
    -webkit-transform: translateY(-25px);
            transform: translateY(-25px);
  }
  85% {
    -webkit-transform: translateY(10px);
            transform: translateY(10px);
  }
  100% {
    -webkit-transform: translateY(0px);
            transform: translateY(0px);
  }
}
@-webkit-keyframes click-animation {
  0% {
    -webkit-transform: scale(1);
            transform: scale(1);
  }
  50% {
    -webkit-transform: scale(0.9);
            transform: scale(0.9);
  }
  100% {
    -webkit-transform: scale(1);
            transform: scale(1);
  }
}
@keyframes click-animation {
  0% {
    -webkit-transform: scale(1);
            transform: scale(1);
  }
  50% {
    -webkit-transform: scale(0.9);
            transform: scale(0.9);
  }
  100% {
    -webkit-transform: scale(1);
            transform: scale(1);
  }
}
body {
  background: #1B1A23;
  height: 100vh;
  font: 400 16px 'Poppins', sans-serif;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}
body .socials {
  position: fixed;
  display: block;
  left: 20px;
  bottom: 20px;
}
body .socials > a {
  display: block;
  width: 30px;
  opacity: .2;
  -webkit-transform: scale(var(--scale, 0.8));
          transform: scale(var(--scale, 0.8));
  transition: -webkit-transform 0.3s cubic-bezier(0.38, -0.12, 0.24, 1.91);
  transition: transform 0.3s cubic-bezier(0.38, -0.12, 0.24, 1.91);
  transition: transform 0.3s cubic-bezier(0.38, -0.12, 0.24, 1.91), -webkit-transform 0.3s cubic-bezier(0.38, -0.12, 0.24, 1.91);
}
body .socials > a:hover {
  --scale: 1;
}